[Gretl-devel] Internal error from the regls addon

Hi, I'm trying to use the regls() function (from the regls addon) inside my own hansl function. In my function I'm creating a list "Xw" which I then pass as regressors to the called regls(). In this situation I'm getting an error message from regls's internal function outer_series_id -- for convenience, here's what the function looks like: <hansl-regls> function list outer_series_id (const string arg) list L loop i=1..$nvars if varname(i) == arg L = {i} break endif endloop return L end function </hansl-regls> The error message says: "'if'-Auswertungsfehler *** error within loop in function outer_series_id called by function regls *** error in function regls, line 193 " I think I've diagnosed the problem to be that $nvars is much much larger than the number of elements in the list Xw (+1 for the dependent variable), and that varname(i) at some point throws an error because of that. If I replace the if-line above with the following two lines, then everything seemingly runs OK: catch string vname = varname(i) if !$error && vname == arg I'm not sure if the use of $nvars in outer_series_id is a bug on the regls side, or if there's a bug with gretl concerning which sub-parts of the dataset (which series) are available in a nested function call here. This is with gretl 2022a (no snapshot) on Windows. cheers sven